 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.internal.util;

 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.ui.IMemento;

 public final class ConfigurationElementMemento implements IMemento {

     private IConfigurationElement configurationElement;

     public ConfigurationElementMemento(
             IConfigurationElement configurationElement) {
         if (configurationElement == null) {
             throw new NullPointerException ();
         }

         this.configurationElement = configurationElement;
     }

     public IMemento createChild(String type) {
         return null;
     }

     public IMemento createChild(String type, String id) {
         return null;
     }

     public IMemento getChild(String type) {
         IConfigurationElement[] configurationElements = configurationElement
                 .getChildren(type);

         if (configurationElements != null && configurationElements.length >= 1) {
             return new ConfigurationElementMemento(configurationElements[0]);
         }

         return null;
     }

     public IMemento[] getChildren(String type) {
         IConfigurationElement[] configurationElements = configurationElement
                 .getChildren(type);

         if (configurationElements != null && configurationElements.length >= 1) {
             IMemento mementos[] = new ConfigurationElementMemento[configurationElements.length];

             for (int i = 0; i < configurationElements.length; i++) {
                 mementos[i] = new ConfigurationElementMemento(
                         configurationElements[i]);
             }

             return mementos;
         }

         return new IMemento[0];
     }

     public Float getFloat(String key) {
         String string = configurationElement.getAttribute(key);

         if (string != null) {
             try {
                 return new Float (string);
             } catch (NumberFormatException eNumberFormat) {
             }
         }

         return null;
     }

     public String getID() {
         return configurationElement.getAttribute(TAG_ID);
     }

     public Integer getInteger(String key) {
         String string = configurationElement.getAttribute(key);

         if (string != null) {
             try {
                 return new Integer (string);
             } catch (NumberFormatException eNumberFormat) {
             }
         }

         return null;
     }

     public String getString(String key) {
         return configurationElement.getAttribute(key);
     }

     public String getTextData() {
         return configurationElement.getValue();
     }

     public void putFloat(String key, float value) {
     }

     public void putInteger(String key, int value) {
     }

     public void putMemento(IMemento memento) {
     }

     public void putString(String key, String value) {
     }

     public void putTextData(String data) {
     }
 }

